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CVE-2026-110726 Média · 6.5 CWE-348 15/10/2026
In `api-gateway` versions till `1.7.3`, The default rate-limit key resolver…
In `api-gateway` versions till `1.7.3`, The default rate-limit key resolver, `ClientIpKeyResolver`, derives the per-client bucket key from the leftmost element of the `X-Forwarded-For` request header. That element is supplied by the originating HTTP client and is not validated against any trusted-proxy list. A single attacker can therefore obtain an unlimited number of independent rate-limit buckets — one per unique header value — and completely bypass the gateway's request-rate limiting on every route that uses the shipped default configuration.
CVE-2026-93483 Crítica · 9.5 CWE-348 15/10/2026
In Znuny through 7.3.6, an attacker can bypass specific standard login procedures and…
In Znuny through 7.3.6, an attacker can bypass specific standard login procedures and gain unauthorized access to sensitive system functions by manipulating a specific HTTP request header. Because the application incorrectly trusts this header, an attacker can impersonate any user, including administrators, without requiring a password. This grants full access to confidential data and system controls. More specifically, the HTTPBasicAuth modules for the agent (Kernel::System::Auth::HTTPBasicAuth) and customer (Kernel::System::CustomerAuth::HTTPBasicAuth) interfaces read the username to log in not only from $ENV{REMOTE_USER} (set by the web server after successful authentication), but also, as a fallback, from $ENV{HTTP_REMOTE_USER}, which is populated directly from an attacker-controllable "Remote-User" request header. On systems where HTTPBasicAuth was configured as the authentication backend, this allowed an attacker to log in as any existing user by sending a request with a forged Remote-User header, without providing any credentials.
CVE-2026-108736 Baixa · 3.7 CWE-348 11/10/2026
Speedtest Tracker through 1.15.0 IP Allowlist Bypass via X-Forwarded-For Spoofing
Speedtest Tracker through 1.15.0 contains an IP allowlist bypass vulnerability that allows unauthenticated remote attackers to evade ALLOWED_IPS and Prometheus allowlists by spoofing X-Forwarded-For headers. Because bootstrap/app.php trusts every peer as a proxy, attackers can supply an allowlisted address to read /prometheus metrics and reach protected web and API endpoints.
CVE-2026-108555 Média · 4.2 CWE-348 10/10/2026
PairDrop through 1.11.2 contains an IP spoofing vulnerability in Peer._setIP that allows remote...
PairDrop through 1.11.2 contains an IP spoofing vulnerability in Peer._setIP that allows remote attackers to join other networks' discovery rooms by supplying a forged cf-connecting-ip header. Attackers who know a victim's public IP can appear as a local device on self-hosted instances not behind Cloudflare to send or receive files.
CVE-2026-108162 Média · 6.5 CWE-348 10/10/2026
Pingvin Share X before 1.22.0 Rate Limit Bypass via Spoofed X-Forwarded-For
Pingvin Share X before 1.22.0 contains a rate limit bypass vulnerability that allows unauthenticated remote attackers to evade per-IP throttling because backend/src/main.ts unconditionally trusts proxy headers. Attackers can rotate spoofed X-Forwarded-For values against /api/auth/signIn, /api/auth/signIn/totp, and /api/auth/resetPassword to brute-force passwords and TOTP codes and forge logged client IP addresses.
CVE-2026-78015 Média · 5.3 CWE-348 09/10/2026
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains…
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Use of Less Trusted Source vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information tampering.
CVE-2026-107271 Média · 5.3 CWE-348 07/10/2026
Gophish through 0.12.1 Login Rate Limit Bypass via X-Forwarded-For Spoofing
Gophish through 0.12.1 contains a rate limit bypass vulnerability that allows unauthenticated attackers to evade /login throttling by spoofing X-Forwarded-For or X-Real-IP headers. Attackers can send a different forwarded address per request so the limiter keyed on rewritten RemoteAddr never triggers, enabling unlimited password guessing and credential stuffing.
CVE-2026-105051 Baixa · 1.9 CWE-348 02/10/2026
Denuvo Anti-Tamper through 2026-03-04 allows bypass of a hypervisor presence check via…
Denuvo Anti-Tamper through 2026-03-04 allows bypass of a hypervisor presence check via CPUID interception (SimpleSvm.sys on AMD; hyperkd.sys and hyperhv.dll on Intel).
CVE-2026-57942 Média · 5.3 CWE-348 29/06/2026
LibreTranslate - IP Spoofing via X-Forwarded-For Header
LibreTranslate through 1.9.7, fixed in commit 397fd22, contains an IP spoofing vulnerability in the get_remote_address() function that allows unauthenticated attackers to spoof client IP addresses by injecting arbitrary values into the X-Forwarded-For header without trusted proxy validation. Attackers can bypass per-IP rate limiting and flood bans by supplying forged addresses in the X-Forwarded-For header to enable unlimited API abuse.
CVE-2026-54289 Média · 4.8 CWE-348 22/06/2026
Hono: Lambda@Edge adapter keeps only the last value of a repeated request header, dropping the rest
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Headers.set instead of Headers.append, so every value overwrites the previous one and only the last reaches the application. Repeated request headers such as X-Forwarded-For, Forwarded, and Via are silently truncated to a single value. Request middleware sees only the last value of a repeated header instead of the full chain. For applications that base access control on the X-Forwarded-For chain, this can weaken or alter that decision; for auditing, hop history is lost. This vulnerability is fixed in 4.12.25.
CVE-2026-12249 Crítica · 9.0 CWE-348 22/06/2026
Canonical ADSys: recuperação de certificado CA via HTTP sem criptografia permite envenenamento do repositório de confiança
Foi identificado um problema no Canonical ADSys nas versões upstream até a v0.16.2. Durante o auto-registro de certificados do Active Directory Certificate Services (AD CS) por meio do script cliente Samba vendorizado (internal/policies/certificate/python/vendor_samba/gp/gp_cert_auto_enroll_ext.py), o ADSys utiliza uma conexão HTTP sem criptografia (http://) em vez de uma conexão HTTPS segura (https://) para solicitar o certificado da CA ao servidor AD CS (GetCACert). Um atacante de rede não autenticado posicionado entre o host Ubuntu gerenciado e o nome de host da CA configurada no AD CS pode realizar um ataque de Man-in-the-Middle (MITM). Ao interceptar a requisição HTTP em texto claro, o atacante pode fornecer um certificado de Root CA arbitrário, controlado por ele. Como o sistema aceita automaticamente esse certificado e o registra no repositório de confiança local do sistema via update-ca-certificates, isso resulta em envenenamento do repositório de confiança de todo o sistema. Consequentemente, clientes TLS que utilizam o repositório de confiança do sistema operacional na máquina afetada aceitarão certificados falsos para domínios arbitrários, permitindo a descriptografia e interceptação persistentes de conexões TLS subsequentes. Este problema foi resolvido na versão v0.16.3.
CVE-2026-48772 Crítica · 10.0 CWE-348 19/06/2026
ProxySQL: spoofing de cabeçalho PROXY permite bypass de roteamento e ACL por client_addr
ProxySQL é um proxy para MySQL e seus forks, bem como para PostgreSQL. Nas versões 2.0.0 até 3.0.8, o frontend MySQL do ProxySQL aceita o frame PP1 `PROXY UNKNOWN <addr> <addr> <port> <port>\r\n` como um cabeçalho de protocolo PROXY bem formado. A especificação do protocolo PROXY v1 do HAProxy afirma que, quando o token de protocolo é `UNKNOWN`, o receptor DEVE ignorar quaisquer campos de endereço que o seguem, porque o proxy declarou que não consegue determinar a identidade do cliente. O ProxySQL analisa esses campos de endereço mesmo assim, via `sscanf`, e grava o endereço de origem forjado no campo `addr.addr` da sessão. Dali ele flui diretamente para o avaliador de regras de consulta, onde o predicado `client_addr` decide roteamento e ACL. Quando `mysql-proxy_protocol_networks = '*'` (o padrão), qualquer peer TCP pode enviar um frame PP1 e escolher qualquer alegação de IP de origem. Com isso, qualquer linha de `mysql_query_rules` fixada a um valor de `client_addr` pode ser forjada: o atacante escreve o endereço que deseja casar na linha PP1, e o ProxySQL roteia sua consulta como se viesse desse endereço. Na prática, trata-se de bypass de roteamento e de ACL. Implantações reais usam `client_addr` para separação de leitura e escrita (aplicações internas vão ao primário, tráfego público para réplicas de leitura), fixação de schema por aplicação e regras de filtro de consultas (DDL permitido somente a partir de CIDR administrativo, consultas públicas com padrões perigosos bloqueadas). Um atacante que consiga alcançar a porta do frontend pode forjar seu caminho para qualquer uma dessas rotas. A versão 3.0.9 corrige este problema.
CVE-2026-44046 Média · 5.8 CWE-348 19/06/2026
Apache APISIX: wolf-rbac plugin Identity Spoofing
Use of Less Trusted Source vulnerability in Apache APISIX. Attacker can take advantage of wolf-rbac plugin under default configuration to potentially pollute logs with spoofed identity information and exploit IP based access control rules. This issue affects Apache APISIX: from 1.2.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.
CVE-2020-37248 Média · 6.5 CWE-348 08/06/2026
OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to…
OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext.
CVE-2026-43634 Alta · 7.5 CWE-348 19/05/2026
HestiaCP 1.2.0-1.9.4 IP Spoofing via CF-Connecting-IP Header
HestiaCP versions 1.2.0 through 1.9.4 contain an IP spoofing vulnerability that allows unauthenticated remote attackers to bypass authentication security controls by supplying an arbitrary IP address in the CF-Connecting-IP HTTP header without verifying the request originated from Cloudflare's network. Attackers can exploit this to circumvent fail2ban brute-force protection, bypass per-user IP allowlists, and poison authentication audit logs by spoofing trusted IP addresses on each request.
CVE-2026-40226 Média · 6.4 CWE-348 10/04/2026
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via…
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
CVE-2026-35391 Alta · 7.5 CWE-348 06/04/2026
Bulwark Webmail getClientIP() trusted client-controlled X-Forwarded-For value, enabling rate limit bypass and audit log forgery
Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftmost) entry of the X-Forwarded-For header, which is fully controlled by the client. An attacker could forge their source IP address to bypass IP-based rate limiting (enabling brute-force attacks against the admin login) or forge audit log entries (making malicious activity appear to originate from arbitrary IP addresses). This vulnerability is fixed in 1.4.11.
CVE-2026-35507 Média · 6.5 CWE-348 02/04/2026
Shynet before 0.14.0 allows Host header injection in the password reset flow.
Shynet before 0.14.0 allows Host header injection in the password reset flow.
CVE-2026-26927 Média · 5.1 CWE-348 02/04/2026
URL (HTTP Origin) call location spoofing in Szafir SDK Web
Szafir SDK Web is a browser plug-in that can run SzafirHost application which download the necessary files when launched. In Szafir SDK Web it is possible to change the URL (HTTP Origin) of the application call location. An unauthenticated attacker can craft a website that is able to launch SzafirHost application with arbitrary arguments via Szafir SDK Web browser addon. No validation will be performed to check whether the address specified in `document_base_url` parameter is in any way related to the actual address of the calling web application. The URL address specified in `document_base_url` parameter is then shown in the application confirmation prompt. When a victim confirms the execution of the application, it will be called in the context of attacker's website URL and might download additional files and libraries from that website. When victim accepts the application execution for the URL showed in the confirmation prompt with the "remember" option before, the prompt won't be shown and the application will be called in the context of URL provided by the attacker without any interaction. This issue was fixed in version 0.0.17.4.
CVE-2026-33690 Média · 5.3 CWE-348 23/03/2026
AVideo vulnerable to IP Address Spoofing via Untrusted HTTP Headers in getRealIpAddr()
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `getRealIpAddr()` function in `objects/functions.php` trusts user-controlled HTTP headers to determine the client's IP address. An attacker can spoof their IP address by sending forged headers, bypassing any IP-based access controls or audit logging. Commit 1a1df6a9377e5cc67d1d0ac8ef571f7abbffbc6c contains a patch.
CVE-2026-3635 Média · 6.1 CWE-348 23/03/2026
Fastify request.protocol and request.host spoofable via X-Forwarded-Proto/Host from untrusted connections when trustProxy uses restrictive trust function
Summary When trustProxy is configured with a restrictive trust function (e.g., a specific IP like trustProxy: '10.0.0.1', a subnet, a hop count, or a custom function), the request.protocol and request.host getters read X-Forwarded-Proto and X-Forwarded-Host headers from any connection — including connections from untrusted IPs. This allows an attacker connecting directly to Fastify (bypassing the proxy) to spoof both the protocol and host seen by the application. Affected Versions fastify <= 5.8.2 Impact Applications using request.protocol or request.host for security decisions (HTTPS enforcement, secure cookie flags, CSRF origin checks, URL construction, host-based routing) are affected when trustProxy is configured with a restrictive trust function. When trustProxy: true (trust everything), both host and protocol trust all forwarded headers — this is expected behavior. The vulnerability only manifests with restrictive trust configurations.
CVE-2025-69240 Alta · 8.8 CWE-348 16/03/2026
Header Poisoning in Raytha CMS
Raytha CMS allows an attacker to spoof `X-Forwarded-Host` or `Host` headers to attacker controlled domain. The attacker (who knows the victim's email address) can force the server to send an email with password reset link pointing to the domain from spoofed header. When victim clicks the link, browser sends request to the attacker’s domain with the token in the path allowing the attacker to capture the token. This allows the attacker to reset victim's password and take over the victim's account. This issue was fixed in version 1.4.6.
CVE-2026-22201 Média · 5.3 CWE-348 13/03/2026
wpDiscuz before 7.6.47 - IP Address Spoofing in getIP()
wpDiscuz before 7.6.47 contains an IP spoofing vulnerability in the getIP() function that allows attackers to bypass IP-based rate limiting and ban enforcement by trusting untrusted HTTP headers. Attackers can set HTTP_CLIENT_IP or HTTP_X_FORWARDED_FOR headers to spoof their IP address and circumvent security controls.
CVE-2025-55292 Alta · 8.2 CWE-348 27/01/2026
In Meshtastic, an attacker can spoof licensed amateur flag for a node
Meshtastic is an open source mesh networking solution. In the current Meshtastic architecture, a Node is identified by their NodeID, generated from the MAC address, rather than their public key. This aspect downgrades the security, specifically by abusing the HAM mode which doesn't use encryption. An attacker can, as such, forge a NodeInfo on behalf of a victim node advertising that the HAM mode is enabled. This, in turn, will allow the other nodes on the mesh to accept the new information and overwriting the NodeDB. The other nodes will then only be able to send direct messages to the victim by using the shared channel key instead of the PKC. Additionally, because HAM mode by design doesn't provide any confidentiality or authentication of information, the attacker could potentially also be able to change the Node details, like the full name, short code, etc. To keep the attack persistent, it is enough to regularly resend the forged NodeInfo, in particular right after the victim sends their own. A patch is available in version 2.7.6.834c3c5.
CVE-2026-24910 Média · 5.9 CWE-348 27/01/2026
In Bun before 1.3.5, the default trusted dependencies list (aka trust allow list) can be…
In Bun before 1.3.5, the default trusted dependencies list (aka trust allow list) can be spoofed by a non-npm package in the case of a matching name (for file, link, git, or github).